Abstract: A system and method for providing a service to promoters, including venues and advertising sponsors, who wish to provide promotions. The service includes making promoter promotions accessible by the mobile phones of members associated with an organization. Typically a promotion and member are matched based on the member's geographical position, as determined automatically by a position sensor in their mobile phone, and by the member's traits and behaviors. By accepting a promotion, a member receives reward points which can be used to obtain goods and services. In addition to accessing promotions, members have mobile access to real-time information about the venues, such as the demographics of venue attendees and media posted by attendees concerning venue characteristics. Using the system, members can determine before going to a venue, such as a nightclub or bar, which venue has their preferred attendee demographic, atmosphere, music, cover charge, drink specials, friends, etc.

Abstract: A prescription is provided which specifies constraints, and the number of joints which may be included between any two position-sensing elements (PSEs), where the joints connect the links of a kinematically constrained multi-articulated structure, whereby the defining parameters of the structure may be determined using the spatial placement of the two PSEs and the kinematic constraints of the multi-articulated structure, and where at least the spatial placement of one link is not directly measured. Also provided are preferred placements of PSEs and goniometers on a kinematically constrained multi-articulated structure which will allow determinatin of the spatial placement of the links, where at least the spatial placement of one link is not directly measured. Revolute joint models of the articulations of the entire human body, as well as preferred PSE and goniometer locations, are provided.